Abstract. The northern Eurasian regions and Arctic Ocean will very likely undergo substantial changes during the next decades. The Arctic-boreal natural environments play a crucial role in the global climate via albedo change, carbon sources and sinks as well as atmospheric aerosol production from biogenic volatile organic compounds. Furthermore, it is expected that global trade activities, demographic movement, and use of natural resources will be increasing in the Arctic regions. There is a need for a novel research approach, which not only identifies and tackles the relevant multi-disciplinary research questions, but also is able to make a holistic system analysis of the expected feedbacks. In this paper, we introduce the research agenda of the Pan-Eurasian Experiment (PEEX), a multi-scale, multi-disciplinary and international program started in 2012 (https://www.atm.helsinki.fi/peex/). PEEX sets a research approach by which large-scale research topics are investigated from a system perspective and which aims to fill the key gaps in our understanding of the feedbacks and interactions between the land-atmosphereaquatic-society continuum in the northern Eurasian region. We introduce here the state of the art for the key topics in the PEEX research agenda and present the future prospects of the research, which we see relevant in this context.

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This chapter is an attempt to identify the individual homelands of the five families making up the Transeurasian grouping, i.e. the Turkic, Mongolic, Tungusic, Koreanic, and Japonic families. Combining various linguistic methods and principles such as the diversity hotspot principle, Bayesian phylolinguistics, cultural reconstruction (“linguistic paleontology”), and prehistoric contact linguistics, the chapter aims to determine the original locations and time depths of the families under discussion. Integrating an archeological perspective, we further propose that the individual speech communities were originally familiar with millet agriculture, while terms for pastoralism or wet-rice agriculture entered their vocabularies only at a later stage in history.

The widespread Uralic family offers several advantages for tracing prehistory: a firm absolute chronological anchor point in an ancient contact episode with well-dated Indo-Iranian; other points of intersection or diagnostic non-intersection with early Indo-European (the Late Proto-Indo-European-speaking Yamnaya culture of the western steppe, the Afanasievo culture of the upper Yenisei, and the Fatyanovo culture of the middle Volga); lexical and morphological reconstruction sufficient to establish critical absences of sharings and contacts. We add information on climate, linguistic geography, typology, and cognate frequency distributions to reconstruct the Uralic origin and spread. We argue that the Uralic homeland was east of the Urals and initially out of contact with Indo-European. The spread was rapid and without widespread shared substratal effects. We reconstruct its cause as the interconnected reactions of early Uralic and Indo-European populations to a catastrophic climate change episode and interregionalization opportunities which advantaged riverine hunter-fishers over herders.

<p><strong>Abstract.</strong> The Northern Eurasian regions and Arctic Ocean will very likely undergo substantial changes during the next decades. The arctic-boreal natural environments play a crucial role in the global climate via the albedo change, carbon sources and sinks, as well as atmospheric aerosol production via biogenic volatile organic compounds. Furthermore, it is expected that the global trade activities, demographic movement and use of natural resources will be increasing in the Arctic regions. There is a need for a novel research approach, which not only identifies and tackles the relevant multi-disciplinary research questions, but is also able to make a holistic system analysis of the expected feedbacks. In this paper, we introduce the research agenda of the Pan-Eurasian Experiment (PEEX), a multi-scale, multi-disciplinary and international program started in 2012 (<a href="https://www.atm.helsinki.fi/peex/"target="_blank">https://www.atm.helsinki.fi/peex/</a>). PEEX is setting a research approach where large-scale research topics are investigated from a system perspective and which aims to fill the key gaps in our understanding of the feedbacks and interactions between the land–atmosphere–aquatic–society continuum in the Northern Eurasian region. We introduce here the state of the art of the key topics in the PEEX research agenda and give the future prospects of the research which we see relevant in this context.</p>

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